Cold Shower Finish

biohacking · medium · 30-90 seconds added to existing shower

What is Cold Shower Finish?

End every shower with 30-90 seconds of the coldest water you can tolerate. Provides 2.5x dopamine increase lasting 2-3 hours, boosts norepinephrine, builds mental resilience, and takes zero extra time.

Is there evidence for it?

EVIDENCEstrong

How do you do Cold Shower Finish?

1.At the end of your normal warm shower, turn water to the coldest setting
2.Start with just 15-30 seconds — breathe through it (physiological sighs help)
3.Increase by 15 seconds each week until you reach 1-2 minutes
4.Focus on slow, controlled breathing — don't hyperventilate or tense up
5.The dopamine peak comes AFTER you get out — that lasting energy is the point

How long does it take?

30-90 seconds added to existing shower.

Is it hard to start?

medium.

Source: Dr. Susanna Søberg, Dr. Andrew Huberman

biohacking · energy · motivation · depression · performance

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